(19)

(11)

EP 2 041 884 A1

(12)

(43) Date of publication: 01.04.2009 Bulletin 2009/14 (21) Application number: 07733448.0 (22) Date of filing: 03.07.2007

(51) International Patent Classification (IPC):  H04B 3/56(2006.01) (86) International application number: PCT/GB2007/002482 (87) International publication number: WO 2008/007051 (17.01.2008 Gazette 2008/03)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 08.07.2006 GB 0613623 (71) Applicant: Vetco Gray Controls Limited Bristol BS48 1BS (GB)	(72) Inventor: ROBINSON, Gerald, Ian Bristol BS20 8PU (GB) (74) Representative: Emerson, Peter James et al Page Hargrave Whitefriars Lewins Mead GB-Bristol BS1 2NT GB-Bristol BS1 2NT (GB)